finish Students and Examinations

Author: babebp

SQL/SQL-50/Students_and_Examinations.sql

@@ -0,0 +1,7 @@
+select s.student_id, s.student_name, sub.subject_name, count(e.student_id) as attended_exams
+from Students s
+join Subjects sub
+left join Examinations e
+on sub.subject_name = e.subject_name and s.student_id = e.student_id
+group by s.student_id, s.student_name, sub.subject_name
+order by s.student_id asc;